20121212023 has 16 divisors (see below), whose sum is σ = 22006605600. Its totient is φ = 18245260800.

The previous prime is 20121212011. The next prime is 20121212099. The reversal of 20121212023 is 32021212102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20121212023 - 2²¹ = 20119114871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121211988 and 20121212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121212623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10811113 + ... + 10812973.

It is an arithmetic number, because the mean of its divisors is an integer number (1375412850).

Almost surely, 2^20121212023 is an apocalyptic number.

20121212023 is a deficient number, since it is larger than the sum of its proper divisors (1885393577).

20121212023 is a wasteful number, since it uses less digits than its factorization.

20121212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121212023 its reverse (32021212102), we get a palindrome (52142424125).

The spelling of 20121212023 in words is "twenty billion, one hundred twenty-one million, two hundred twelve thousand, twenty-three".